Alert archive / Alabama / Tornado Warnings in 2008

Tornado Warning 21, NWS Huntsville, AL

April 11, 2008Lawrence County, Morgan County, Alabama

NWS Huntsville, AL issued this tornado warning at Apr 11, 2008, 2:11 PM CDT for Lawrence County, Morgan County, Alabama. It was in force for 34 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 11, 2008, 2:11 PM CDT (19:11 UTC)
Expired: Apr 11, 2008, 2:45 PM CDT
In force: 34 min
Issued by: NWS Huntsville, AL
Area: Storm-based polygon

Counties Lawrence County, AL, Morgan County, AL

The radar

The Northeast Alabama radar (KHTX), 102 km from the middle of the area, began a volume at 19:11 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 11, 10:15 AM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 7.2 hours before the alert went out and 158 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 33 J/kg
Mixed-layer CIN: -160 J/kg
Mixed-layer LCL: 566 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 217 m²/s²
0-3 km storm-relative helicity: 271 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WFUS54 KHUN 111911
TORHUN
ALC079-103-111945-
/O.NEW.KHUN.TO.W.0021.080411T1911Z-080411T1945Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HUNTSVILLE AL
211 PM CDT FRI APR 11 2008

THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN MORGAN COUNTY IN NORTH CENTRAL ALABAMA...
  EAST CENTRAL LAWRENCE COUNTY IN NORTHWEST ALABAMA...

* UNTIL 245 PM CDT

* AT 211 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR MOULTON...
  MOVING NORTHEAST AT 45 MPH.

* LOCATIONS NEAR THE PATH OF THIS TORNADO INCLUDE...
  MOULTON.
  TRINITY.
  DECATUR.
  PRICEVILLE.

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM CDT FRIDAY AFTERNOON
FOR NORTHERN ALABAMA AND CENTRAL TENNESSEE.

LAT...LON 3467 8709 3462 8696 3452 8686 3442 8730
      3456 8737
TIME...MOT...LOC 1911Z 247DEG 40KT 3451 8721

$$

DJN

3 follow-up statements

000 
WWUS54 KHUN 111921
SVSHUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
220 PM CDT FRI APR 11 2008

ALC079-103-111945-
/O.CON.KHUN.TO.W.0021.000000T0000Z-080411T1945Z/
MORGAN AL-LAWRENCE AL-
220 PM CDT FRI APR 11 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 245 PM CDT FOR EAST
CENTRAL LAWRENCE AND NORTHWESTERN MORGAN COUNTIES...

AT 220 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR CADDO...MOVING 
NORTHEAST AT 45 MPH. SPOTTERS REPORTED A ROTATING WALL CLOUD AT THE 
INTERSECTION OF HIGHWAY 434 AND 214. 

DECATUR IS STILL IN PATH OF THIS STORM. OTHER LOCATIONS IN THE 
WARNING INCLUDE BUT ARE NOT LIMITED TO TRINITY...BASHAM...FLINT CITY 
AND PRICEVILLE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM CDT FRIDAY AFTERNOON
FOR NORTHERN ALABAMA AND CENTRAL TENNESSEE.

LAT...LON 3467 8709 3462 8696 3452 8686 3442 8730
      3456 8737
TIME...MOT...LOC 1920Z 247DEG 40KT 3456 8709

$$

DJN

000 
WWUS54 KHUN 111923 CCA
SVSHUN

SEVERE WEATHER STATEMENT...CORRECTED
NATIONAL WEATHER SERVICE HUNTSVILLE AL
220 PM CDT FRI APR 11 2008

ALC079-103-111945-
/O.CON.KHUN.TO.W.0021.000000T0000Z-080411T1945Z/
MORGAN AL-LAWRENCE AL-
220 PM CDT FRI APR 11 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 245 PM CDT FOR EAST
CENTRAL LAWRENCE AND NORTHWESTERN MORGAN COUNTIES...

AT 220 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR CADDO...MOVING 
NORTHEAST AT 45 MPH. SPOTTERS REPORTED A ROTATING WALL CLOUD AT THE 
INTERSECTION OF HIGHWAY 434 AND 214...NEAR CADDO. 

DECATUR IS STILL IN PATH OF THIS STORM. OTHER LOCATIONS IN THE 
WARNING INCLUDE BUT ARE NOT LIMITED TO TRINITY...BASHAM...FLINT CITY 
AND PRICEVILLE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM CDT FRIDAY AFTERNOON
FOR NORTHERN ALABAMA AND CENTRAL TENNESSEE.

LAT...LON 3467 8709 3462 8696 3452 8686 3442 8730
      3456 8737
TIME...MOT...LOC 1920Z 247DEG 40KT 3456 8709

$$

DJN

000 
WWUS54 KHUN 111939
SVSHUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
239 PM CDT FRI APR 11 2008

ALC079-103-111949-
/O.EXP.KHUN.TO.W.0021.000000T0000Z-080411T1945Z/
MORGAN AL-LAWRENCE AL-
239 PM CDT FRI APR 11 2008

...THE TORNADO WARNING FOR EAST CENTRAL LAWRENCE AND NORTHWESTERN
MORGAN COUNTIES EXPIRES AT 245 PM CDT...

WEATHER SERVICE DOPPLER RADAR INDICATED THE THUNDERSTORM THAT 
PROMPTED THE TORNADO WARNING HAD WEAKENED SLIGHTLY AND WAS NOT 
SHOWING SIGNS OF PRODUCING A TORNADO. THEREFORE THE TORNADO WARNING 
HAS BEEN ALLOWED TO EXPIRE.

HEAVY RAIN...SMALL HAIL...GUSTY WINDS...AND FREQUENT LIGHTNING WERE
STILL POSSIBLE FROM THIS THUNDERSTORM. STAY INDOORS UNTIL THE STORM
HAS PASSED.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM CDT FRIDAY AFTERNOON
FOR NORTHERN ALABAMA AND CENTRAL TENNESSEE.

LAT...LON 3467 8709 3462 8696 3452 8686 3442 8730
      3456 8737
TIME...MOT...LOC 1939Z 247DEG 40KT 3464 8685

$$

DJN

The office that day

Everything else NWS Huntsville, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 11, 11:55 AM CDT	Severe Thunderstorm Warning	HUN	Colbert, Lauderdale	38 min
Apr 11, 1:16 PM CDT	Tornado Warning	HUN	Cullman	44 min
Apr 11, 1:19 PM CDT	Severe Thunderstorm Warning	HUN	Franklin, Lawrence	41 min
Apr 11, 1:36 PM CDT	Tornado Warning	HUN	Cullman, Morgan	39 min
Apr 11, 1:42 PM CDT	Severe Thunderstorm Warning	HUN	Limestone, Madison	48 min
Apr 11, 1:50 PM CDT	Tornado Warning	HUN	Lawrence	25 min
Apr 11, 1:55 PM CDT	Tornado Warning	HUN	Madison	35 min
Apr 11, 2:08 PM CDT	Tornado Warning	HUN	Madison, Marshall, Morgan	37 min
Apr 11, 2:29 PM CDT	Severe Thunderstorm Warning	HUN	Limestone, Madison	31 min
Apr 11, 2:42 PM CDT	Severe Thunderstorm Warning	HUN	Jackson, Marshall	48 min
Apr 11, 2:42 PM CDT	Tornado Warning	HUN	Cullman	33 min
Apr 11, 2:45 PM CDT	Tornado Warning	HUN	Cullman	30 min
Apr 11, 3:13 PM CDT	Tornado Warning	HUN	Cullman	32 min
Apr 11, 3:14 PM CDT	Severe Thunderstorm Warning	HUN	DeKalb	29 min
Apr 11, 3:23 PM CDT	Severe Thunderstorm Warning	HUN	Jackson	52 min

Nearby

Tornado Warnings in Alabama, 2008 Every tornado warning in 2008 Tornadoes in 2008

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.